import java.util.Scanner;
public class Main3 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String source =sc.nextLine();
        StringBuffer outcome = new StringBuffer();
        for (int i = 0; i < source.length(); i++) {
            char ch = source.charAt(i);
            char newch = ch;
            if (ch >= 'A' && ch <= 'Y' || ch >= 'a' && ch <= 'y')
                newch = (char) (ch + 1);
            else if (ch == 'Z')
                newch = 'A';
            else if (ch == 'z')
                newch = 'a';
            outcome.append(newch);
        }
        System.out.println(outcome.toString());
        sc.close();
    }
}